* {
    padding: 0;
    margin: 0;
}

li {
    list-style: none;
}

a {
    text-decoration: none;
    color: #fff;
}

a:hover {
    color: skyblue;
    border-bottom: 1px solid #fff;
}

img {
    vertical-align: middle;
}

button {
    user-select: none;
    cursor: pointer;
}